384 LXXXH. PRIMULACEJE. PRIMULA. 



Conspectus of the Genera. 



( 7-cleft. Leaves in one whorl. Trientalw. 4 



< 5-cleft. Flowers paniculate, 

 f Corolla white, ( 4 -cleft. Plants 2 inches high. 



Stamens 6. Racemes axillary. 



] Corolla yellow. ( Stamens 5 



I Corolla scarlet. Plant prostrate. Fls. solitary, axillary 



Samoltts. 10 

 Csntunculus. 9 

 Nawnburgia. 6 

 Lysimachia. 7 

 Anagallis. 8 



j undivided. Corolla wanting, calyx colored, white Glaux. 5 



f cauline, pectinate-pinnatifid, submersed in water Hottonia. 1 



< $ Corolla segments spreading. .... Primula. 2 

 Leaves ( all radical. Scape umbellate. ( Corolla segments reflexed Dodecathe&n. 3 



1. HOTTONIA. 



In honor of Peter Hotton, professor in the University of Leyden, died 1709. 



Calyx 5-parted ; cor. salver-form, with a short tube and a flat, 5- 

 lobed limb ; sta. inserted on the tube of the corolla, included ; stig. 

 globose ; caps, globose-acuminate. ^ Fleshy, aquatic herbs, with pec- 

 tinate-pinnatifid, submersed, radical Ivs. 



H. INFLATA. Ell. (H. palustris. Ph. not Linn.) Water Feather. 



Scape articulate, the internodes and lower parts inflated; fls. verticillate, 

 pedunculate. A curious aquatic plant, in swamps and stagnant waters, Ms., 

 R. I. and Ct., N. Y. to Flor. Stem immersed, round, thick, spongy, with a 

 whorl of long and beautifully pectinate leaves at or near the surface of the water. 

 Peduncles or scapes several (610) together, arising in a sort of umbel from 

 the top of the stem, 8 10' long, inflated between the joints, forming the most 

 remarkable feature of the plant. Flowers small, white, in numerous verticils, 

 generally 4 in each. Pedicels ' long. June. 



2. PRIMULA. 



Lat. primus, first ; because its blossoms appear earliest in spring. 



Corolla salver-form, with an open orifice ; capsule opening with a 

 10-cleft dehiscence; stamens 5, not exserted; stigma globose. Herbs 

 (mostly European) with radical Ivs. Fls. in an involucrate umbel on a 

 scape, showy. 



1. P. MISTASSINICA. Michx. (Fig. 49.) 



Lvs. spatulate, dentate or crenate, obtuse or acute, attenuate at base ; invol. 

 1 8-flowered ; bracts 3 times shorter than the pedicels, linear-subulate ; cal. 

 much shorter than the tube of the corolla; cor. salver-form, lobes obcordate. 

 Shores of Seneca Lake, N. Y., Dr. Sartwell ! Lake Mistassins, Can. and through- 

 out Brit. Am. A very delicate plant, about 3' high. Leaves about 5, 5 8" by 

 3 4", almost petiolate. Flowers 5" diam., white. Pedicels 7" in length. 



2. P. FARINOSA. /?. Americana. Torr. Bird's-eye Primrose. 



Lvs. narrow, veiny, elliptic-lanceolate, obtuse, denticulate at apex, attenu- 

 ate at base, under surface covered with a yellowish- white, farinaceous dust ; 

 invol. farinaceous, 3 20-floAvered, shorter than the pedicels ; bracts long-acumi- 

 nate ; cal. segments lanceolate, acute ; cor. salver-form, lobes obcordate, bifid, 

 obtuse. Shores of Lakes Huron and Superior, Nutt., Houghton, N. to lat. 66. 

 Scape 6 12' high. Flowers purple or flesh-color. 



3. P. AURICULA. Aurided Primrose or Auricula. Lvs. obovate, entire or ser- 

 rate, fleshy ; scape many-flowered, central, as long as the leaves ; invol. of short 

 leaves ; cal. powdery. 1 Native of the Alps. A well known favorite of the 

 florist. The cultivated varieties are innumerable, and many of them of exqui- 

 site beauty and fragrance. May. f 



4. P. ELATIOR. Jacq. Oxlip Primrose. Lvs. toothed, rugose, hairy on each 

 side ; umbel many-flowered, with the outer flowers nodding ; cor. flat. 1|_ Native 

 of Britain. Flowers yellow, scentless, in a simple umbel elevated upon a scape 

 a foot high. Apr. May. f 



5. P. OFFICINALIS. Jacq. (P. veris. Cam.) Cowslip Primrose. Lvs. toothed, 

 rugose, hairy beneath ; umbels many-flowered, flowers all nodding ; .cal. angular ; 

 cor. concave, 7J. Native of Britain. Flowers yellow. The plant smells strongly 



